18038022 has 16 divisors (see below), whose sum is σ = 36149232. Its totient is φ = 6000480.

The previous prime is 18038021. The next prime is 18038051. The reversal of 18038022 is 22083081.

It is a junction number, because it is equal to n+sod(n) for n = 18037983 and 18038001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18038021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 468 + ... + 6024.

It is an arithmetic number, because the mean of its divisors is an integer number (2259327).

Almost surely, 2^18038022 is an apocalyptic number.

18038022 is an abundant number, since it is smaller than the sum of its proper divisors (18111210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18038022 is a wasteful number, since it uses less digits than its factorization.

18038022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6103.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 18038022 is about 4247.1192589801. The cubic root of 18038022 is about 262.2585389575.

The spelling of 18038022 in words is "eighteen million, thirty-eight thousand, twenty-two".